I'm sorry, but it seems like there's no prompt given for sentence completion number 3. Could you please provide the prompt so I can assist you further?

Similarly, I'm unable to generate a complete sentence for sentence number 4 without a prompt. If you could provide the missing information, I'd be happy to help.

Unfortunately, the same applies to sentence number 5. Please provide the necessary prompt for completion.

Without a prompt, I'm unable to generate a complete sentence for sentence number 6. Could you provide the missing information?

The correct sentence is: "Did you join in the sports competition yesterday?"

The correct sentence is: "Each year, the Golden Gate Bridge attracts more than 10 million visitors."